Question

the area of a semicircle of radius r is​

Answer 1

Step-by-step explanation:

pie r²/2

the semicircle of radius r is

Answer 2

Answer:

Hence, area of semicircle will be $\frac{11}{7}r^2$ Sq. cm

Step-by-step explanation:

In context to question asked,

We have to determine the area of semicircle

As per data given in the question,

We have,

Radius of semicircle = r unit

As we know that,

Area of semicircle is half the area of circle.

So, formula for finding area of semicircle will be $\frac{1}{2} \Pi r^2$

So, for finding the area of semicircle we will put the value of radius of semicircle in above formula

Thus we will get,

$Area = \frac{1}{ 2}\Pi r^2\\=\frac{1}{2} \times \frac{22}{7} \times r^2\\=\frac{1}{2} \times \frac{22}{7} \times r^2 =\frac{11}{7}r^2 \:unit^2$